85722857858 has 8 divisors (see below), whose sum is σ = 140273767440. Its totient is φ = 38964935380.

The previous prime is 85722857839. The next prime is 85722857861. The reversal of 85722857858 is 85875822758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 85722857794 and 85722857803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1948246748 + ... + 1948246791.

It is an arithmetic number, because the mean of its divisors is an integer number (17534220930).

Almost surely, 2^85722857858 is an apocalyptic number.

85722857858 is a deficient number, since it is larger than the sum of its proper divisors (54550909582).

85722857858 is a wasteful number, since it uses less digits than its factorization.

85722857858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896493552.

The product of its digits is 100352000, while the sum is 65.

The spelling of 85722857858 in words is "eighty-five billion, seven hundred twenty-two million, eight hundred fifty-seven thousand, eight hundred fifty-eight".